Akai GXC-750

5) Explanation of F.FWD and RWD automatic stop
mechanism function
i) FAST FORWARD -> STOP
(Refer to Fig. 34)
a) When the Keyboard Block F.FWD Button
is depressed, the Fast Forward slide is
pushed out as shown by arrow mark (1)
in the figure.
b) The Fast Forward stop lever is pushed out
by the Fast Forward slide hook.
c) The Fast Forward stop rod which is inter-
locked with the Fast Forward stop lever
pulls the Mode Selector lever (Refer to
arrow mark (3) in Fig. 34).
d) The Mode Selector lever pulls the selector
slide and the selector pin moves to the
position shown at @) in Fig. 34.
e) At the end of F.FWD when tape travel
stops, the System Control Circuit and kick
mechanism operates, the selector pin depres-
ses the stop slide, and the Keyboard Block
is released.
ii) REWIND —STOP (Refer to Fig. 35)
a) When the Keyboard Block RWD. Button is
depressed to rewind the tape, the rewind
slide is thrust forward as shown by arrow
mark ()in the figure and at the same time
the rewind slide hook depresses the rewind
lever.
Also at the same time, the wind spring
causes the wind pulley to contact the REV
flywheel.
b) At this time, the Rewind lever pushes the
Rewind stop slide to the left as shown by
arrow mark (2)in Fig. 35 and drive lever (3)
selector pin is stabilized at position (A).
NOTE: In the operation described in b),
the selector pin will come to above
the stop slide regardless of whether
the Reverse Selector is set to NON,
SINGLE, or CONT position.
c) For this reason, at the end of rewind, the
system control circuit operates, and follow-
ing kick mechanism change, the selector
pin depresses the stop slide, and in turn
the stop slide depresses the slide lever and
the Keyboard Block is released.
6) Detector Mechanism for prevention of re-recording
(Refer to Fig. 36).
(REV SELECTOR at SIGLE “)
a) At the end of FWD recording, when changing
to REV recording direction, if the break out
lug for the reverse side (right side) has been
removed from the cassette pack being used,
operation is as follows:
b) Because at FWD recording mode, the recording
pin enters the cassette pack and the detector
lever pulls the Mode Selector as shown by
arrow mark (1) in Fig. 34, the selector slide
pushes the selector pin to above the stop
slide.
c) At the end of FWD direction recording, the
system control circuit is activated and stop
plunger solenoid SL! operates. Also the
kick mechanism functions and_ the selector
pin depresses the stop slide. Thus the
stop lever is depressed and the Keyboard
Block releases.
NOTE: When the Recording Button is depress-
ed while the Reverse Selector is at
CONT Gi. the Reverse Selector
will automatically returnto SINGLE
= position.
2. REVERSE SELECTOR OPERATING
MECHANISM
The Reverse Selector Mechanism operates by means
of drive lever (3) depressing the reverse slide.
1. At NON REVERSE the selector pin assumes the
right hand position indicated inthe figure and the
syscon operates. Even when the solenoid plunger
causes the drive lever to operate, it does not
depress the reverse slide, but depresses the stop
slide. Consequently, the stop slide depresses the
keyboard release lever and the deck enters stop
mode.
2. At SINGLE REVERSE, the selector pin assumes
the center position indicated in the figure and the
syscon operates and when the solenoid plunger
causes the drive lever to operate, the reverse
slide functions. Consequently, the reverse lever
operates and the machine enters reverse mode.
However, at the same time that the machine
enters reverse mode, the selector pin moves to the
left so that at the end of reverse playback, the
selector pin depresses the stop plate and the
machine enters STOP mode in the sarne way as at
NON-REVERSE.
3. At CONT REVERSE. the Mode Selector mives
to the far left and the selector pin assumes the
left hand position indicated in the figure. Con-
sequently, each time the syscon operates. the
drive lever depresses the reverse slide. and every
time the tape stops, reverse is repeated for con-
tinuous playback.
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